Display device



FIG. 1 is a perspective view of the display device; the parts of the drawing shown in broken lines are for illustration purposes which form no part of the claimed design;

FIG. 2 is a side view of the display device thereof; the parts of the drawing shown in broken lines are for illustration purposes which form no part of the claimed design; and,

FIG. 3 is a plan view of the display device; the parts of the drawing in broken lines are for illustration purposes which form no part of the claimed design. 

The ornamental design for a display device, as shown and described. 